package co.yixiang.modules.security.security;

import org.springframework.security.access.AccessDeniedException;
import org.springframework.security.web.access.AccessDeniedHandler;
import org.springframework.stereotype.Component;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;

/**
 * 自定义访问拒绝处理器，实现AccessDeniedHandler接口
 * 用于处理当用户没有足够权限访问某个资源时的情况
 */
@Component
public class JwtAccessDeniedHandler implements AccessDeniedHandler {

   /**
    * 处理访问拒绝异常的方法
    * 当用户尝试访问他们没有权限访问的资源时被调用
    *
    * @param request       当前的HttpServletRequest对象
    * @param response      当前的HttpServletResponse对象
    * @param accessDeniedException  访问拒绝异常
    * @throws IOException 如果发生I/O错误
    */
   @Override
   public void handle(HttpServletRequest request, HttpServletResponse response, AccessDeniedException accessDeniedException) throws IOException {
      //当用户在没有授权的情况下访问受保护的REST资源时，将调用此方法发送403 Forbidden响应
      response.sendError(HttpServletResponse.SC_FORBIDDEN, accessDeniedException.getMessage());
   }
}
